{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "3.16"
},
"nested_loop": [
{
"table": {
"table_name": "f",
"access_type": "range",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
"key_length": "3",
"rows_examined_per_scan": 3,
"rows_produced_per_join": 3,
"filtered": "100.00",
"index_condition": "(`cscartdb`.`f`.`feature_id` in ('1434','1435','1436'))",
"cost_info": {
"read_cost": "1.81",
"eval_cost": "0.30",
"prefix_cost": "2.11",
"data_read_per_join": "1K"
},
"used_columns": [
"feature_id",
"position"
]
}
},
{
"table": {
"table_name": "fd",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id",
"lang_code"
],
"key_length": "9",
"ref": [
"cscartdb.f.feature_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 3,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.75",
"eval_cost": "0.30",
"prefix_cost": "3.16",
"data_read_per_join": "6K"
},
"used_columns": [
"feature_id",
"description",
"lang_code"
]
}
}
]
}
}
feature_id | description | position |
---|---|---|
1434 | Color | 0 |
1435 | Size | 0 |
1436 | Firmness | 0 |